The best smart thermostats: Our list of the best

In view of rising energy costs, more and more people are trying to reduce their consumption of electricity, gas and the like. This is not only easy on the wallet, but also on the environment. The motivation to make savings grows every year when the days get shorter and the temperatures drop again. Buying a smart thermostat for your heating is much more helpful and convenient than regularly checking the meter cupboard. There are now many of these on the market, which can quickly lead to confusion. But don’t worry – we’ve got you covered. In our best list, we have selected the best smart radiator thermostats for you.

Most of you probably still use traditional radiators in your apartment or house. Here, you can easily remove the rotary control and usually replace it quickly and easily with a smart model. In this case, the smart thermostat automatically adjusts the radiator output. We have already explained how to replace a thermostat in our tutorial. Now all you need is the right model. We can highly recommend the following thermostats.

The Bosch Smart Home Radiator Thermostat II (+M) is an intelligent solution for controlling the room temperature and saving energy. This thermostat can be controlled via the Bosch Smart Home app or voice assistants such as Amazon Alexa and Google Assistant.

Special features include automatic schedules and window open detection, which temporarily switches off the heating when there is a draught. It is also easy to install, operates quietly and offers maximum safety thanks to child safety and frost protection. Integration into the Bosch Smart Home environment enables central control of several thermostats.

The AVM FRITZ!DECT 302 radiator thermostat offers an intelligent and user-friendly solution for heating control in your home. It can be quickly integrated into your home network and is compatible with the FRITZ! The E-Ink display provides a clear indication of the current settings and functions such as frost protection and a boost function for quick heating.

With individually adjustable time programs, you can control the temperature according to your needs and thus reduce energy costs by up to 10 %. A long battery life ensures continuous operation over several heating periods. For added flexibility, you can also adjust the temperature on the go using the free FRITZ! Automatic updates ensure that you can always use the latest functions and security standards.

The Homematic IP Radiator Thermostat – Flex offers flexible, smart heating control with simple installation that fits on standard valves without an adapter. The thermostat can be controlled via the Homematic IP app and offers functions such as time profiles and window open detection, allowing the heating output to be adjusted and energy to be saved.

The battery operation and compact design allow for unobtrusive use. Thanks to integration into the Homematic IP system, the thermostat can be combined with other smart home devices and controlled via voice assistants.

The FRITZ!DECT 301 smart radiator thermostat from AVM (review) enables convenient heating control and reduces energy costs. Equipped with an energy-saving E-Ink display that is easy to read from different angles, the thermostat can be easily integrated into the home network via the DECT button on the FRITZ!

Via the MyFRITZ! app or on the FRITZ!Fon, users can create schedules that optimally adapt the heating times to their own needs. The automatic update function ensures continuous improvements and new features.

The Eve Thermo smart radiator thermostat enables precise heating control that can be fully controlled via Apple HomeKit or Siri. The Eve app can be used to create detailed schedules that take everyday life and individual needs into account.

Thanks to window detection, the heating switches off automatically as soon as a window is opened, thus saving energy. Eve Thermo works without an additional bridge and is Bluetooth-enabled. Its simple installation and high compatibility make it the ideal solution for the smart home.

The Homematic IP Radiator Thermostat – Evo is an intelligent heating control solution that is characterized by its simple installation and ease of use. The thermostat offers precise temperature control and supports control via the Homematic IP app.

Thanks to the integrated window open detection, the heating is automatically turned down to save energy. It can be combined with other Homematic IP devices and enables the creation of individual time profiles for each room. With its stylish design, it also blends harmoniously into any home.

The smart radiator thermostat starter pack from Netatmo enables efficient and convenient heating control in rooms with central heating. The app control allows you to create heating profiles that take into account the daily routine and individual preferences.

The “Auto-Adapt” function automatically adjusts the heating output to the outside temperature and thus helps to save energy. In addition, “Open Window Detection” recognizes open windows and switches off the heating if necessary. The package includes a central control unit and can be easily expanded with additional Netatmo devices.

The smart radiator thermostat tado° X Starter Kit helps you save energy and control the room temperature efficiently. It is easy to install and offers full control via app or directly on the device using a touch display and rotary dial. The integrated battery is charged via USB-C and lasts for around a year.

Using the included Bridge X, it connects to the Wi-Fi and integrates seamlessly with popular smart home systems such as Alexa, Google Assistant and Apple Home. The Auto-Assist mode intelligently adjusts the heating to your presence and open windows, which enables additional savings.

New builds and renovated houses are increasingly relying on underfloor heating. After all, doing away with traditional radiators makes the room feel much more homely. Even if smart thermostats for retrofitting are still somewhat uncommon in this area, there are now also suitable smart home solutions.

The Bosch room thermostat 2 is an innovative solution for intelligent heating control in your home. It not only offers precise control of the room temperature, but also integrates seamlessly into the Bosch Smart Home system. With an easy-to-use touch interface and a clear LED display, it allows you to quickly adjust your heating needs. The thermostat supports both individual room control and time programming. This allows you to flexibly organize the heating times according to your daily routine.

It can be controlled via the Bosch Smart Home app, which also gives you an overview of your energy consumption. Thanks to its compatibility with various heating systems, including underfloor heating and radiators, it is extremely versatile. In addition, the integrated window-open detection ensures that the heating automatically turns down when a window is opened, which helps to save energy. With a compact design and the option of wall mounting, the Bosch Room Thermostat 2 fits into any environment. This makes it an intelligent choice for environmentally and price-conscious households.

The 3rd generation Google Nest Learning Thermostat offers smart heating control with a sleek design and a 2.08-inch color LCD display. It is compatible with most 24V heating systems, including gas and heat pumps. The self-learning functions adapt to the user’s individual heating habits and automatically create a heating schedule that optimizes both comfort and energy savings.

Equipped with sensors for temperature, humidity, movement and ambient light, it ensures precise temperature control. The Wi-Fi connection allows users to conveniently control the thermostat via the free Nest app on smartphones or tablets, even when on the move. The thermostat also supports energy-saving programs to reduce heating costs. Overall, the Google Nest Learning Thermostat is an intelligent solution for improving home comfort and reducing energy consumption

The tado° Smart Thermostat X for underfloor heating offers a modern and user-friendly heating control solution. It is compatible with most heating systems, including Relay and OpenTherm, and enables control of water-based underfloor heating systems. The starter kit includes a tado° Bridge X, which provides the connection to the internet. The app guides you step by step through the installation and enables individual temperature control per room, whether on the move or directly on the device.

With a compact size of 104 x 104 x 18 mm and LED backlighting, the thermostat is both functional and aesthetically pleasing. The system supports the Matter smart home standard, which enables seamless integration into existing smart home solutions. In addition, tado° offers a money-back guarantee if the energy savings are not satisfactory.

Anyone looking for the best smart radiator thermostats will find suitable solutions on the tech market. However, our list of the best should not only make it clear that demand is met with sufficient models. Users of underfloor heating can also breathe a sigh of relief. After all, it is now also possible for owners of non-smart underfloor heating systems to upgrade. No matter which system you choose, one thing is certain: using a smart thermostat is not only easy on your wallet, but also on the environment.